Nuprl Lemma : R-plus_wf 11,40

A, B:Realizer. R-plus(A;B)  Realizer 
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Definitionsx. t(x), R-plus(A;B), t  T, x:A. B(x), x(s)
LemmasRplus wf, Rnone? wf, ifthenelse wf, es realizer wf, let wf

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